Congrats on your boys first trip to the range.i cant wait intil the day my daughter is old enough to take out shooting.i currently have a remington 597 .22lr that will be passed down as her first gun when she is old enough and mature enough to handle it..i think 9 is a very good age to learn i plan on teaching my daugheter at about 8 i learned when i was about 6 or 7 but iti all depends on maturity level..it has to be a proud day for a father and im excited for it to come im sure you where in your glory that day and you and your son will always cherish it..